JP3264730B2 - Tillage claw mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a tilling claw which is fixedly mounted on a tilling shaft by inserting a mounting base of the tilling claw to prevent the tilling claw from coming off, and restricting the rotation of the mounting base by a holding spring. The present invention relates to a tilling claw mounting device.

[0002]

2. Description of the Related Art Conventionally, when a tilling claw is mounted on a holder fixed to a tilling shaft, a mounting base of the cultivating claw is inserted into the holder, and a bolt is inserted into a bolt insertion hole formed in the mounting base of the holder and the tilling claw. It was inserted and tightened with nuts. However, tilling nails are used in the soil,
When the bolts and nuts are worn or cut, they will need to be replaced.However, if the bolts and nuts are rusted or firmly tightened, the removal is troublesome, requiring a lot of time and effort. .

In order to solve such a problem, a mounting base of a tilling claw is inserted into a holder fixed to a tilling shaft, and a pin is inserted through a pin insertion hole formed in the holder and the mounting base. When the mounting base is rotated to the working position in the holder while retaining the base, the side of the mounting base is pressed by the holding spring to regulate the rotation of the mounting base, making it easy and easy to replace the tilling claw. The present applicant has proposed a tilling claw mounting device which can be made into a cultivation.

[0004]

By the way, as in the prior art, a pin is inserted into a pin insertion hole of the holder and the mounting base to prevent the mounting base from coming off, and the mounting base is rotated to the working position in the holder. When the holding spring is pressed against the side surface to restrict the rotation of the mounting base, for example, when the tilling shaft is reversed to level the unevenness at the tilling work start position, The pressing of the base by the holding spring is released, and the tilling claw is in a free state. Then, when the tilling shaft is rotated forward for tilling work, the mounting base may not be pressed and fixed smoothly by the presser spring. However, there has been a problem that abnormal abrasion occurs on the contact surface, and the fixing function of the presser spring is lost and repair is required. The present invention has been made to solve the above problems.

[0005]

In order to achieve the above object, the present invention provides: (1) A tilling claw mounting base 4 is inserted into a holder 3 fixedly mounted on a tilling shaft 2, and the holder 3 and the mounting base are mounted. The pin 10 is inserted through the pin insertion hole 5 formed in the pin 4 to prevent the mounting base 4 from coming off, and the side of the mounting base 4 is pressed by the pressing spring 8 in the holder 3 to restrict the rotation of the mounting base 4. In the tilling claw mounting device 1 configured to perform
The insertion holes 3a into which the mounting bases 4 of the tilling claws are inserted and guided while slidingly contacting the mounting bases 4 of the tilling claws on both sides in the width direction. Guide / contact members 6 and 7 that come into contact when rotated are provided integrally, and when the mounting base 4 is rotated to the working position, the pin insertion hole 5 of the holder and the pin insertion hole 5 of the mounting base match. At the same time, the holding spring 8 presses the side surface of the mounting base 4 so as to insert the pin 10 to prevent the mounting base 4 from coming off. (2) The insertion hole 3a of the holder is provided with a tilling nail. Base 4
The holding spring 8 does not press the side surface of the mounting base 4 at the position where the mounting base 4 is inserted and removed, but presses when the mounting base 4 rotates to the working position.

[0006]

According to the above means, the tilling claw mounting device of the present invention performs the following operations. The insertion holes for inserting the mounting base of the tilling claw of the holder are guided on both sides in the width direction while slidingly contacting when inserting the mounting base of the cultivating claw, and are turned to the working position after inserting the mounting base. Information that sometimes comes in contact
The contact member is provided integrally, and when the mounting base is rotated to the working position, the pin insertion hole of the holder and the pin insertion hole of the mounting base match, and the pressing spring presses the side surface of the mounting base to insert the pin. As the tilling shaft is reversed, the mounting base is in contact with the guide and contact members, and the mounting base of the tilling claw is pressed by the presser spring. In addition, the tilling claw does not become free, and when the tilling operation is performed by rotating the tilling shaft forward, abnormal wear does not occur on the contact surface between the holding spring and the mounting base. Since the presser spring does not press the mounting base side surface at the position where the mounting base of the tilling claw is inserted and removed, and only presses when the mounting base rotates to the working position, the fitting insertion hole of the holder is used. Exchange is easy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 and FIG.
Is a tilling claw mounting device, and this tilling claw mounting device 1 is the same as a conventionally well-known device in which a holder 3 is fixed to a tilling shaft 2. The width and thickness of the holder 3 are slightly larger than those of the conventional one, and the insertion hole 3 of the tilling claw mounting base is formed.
a is a mounting base 4 of a tilling nail having a rectangular cross section.
Are inserted and removed, and are attached and detached. A pin insertion hole 5 is formed in each of the holder 3 and the mounting base 4 of the tilling nail.

The holder 3 is guided on both sides in the width direction within the insertion hole 3a while slidingly contacting the mounting base 4 of the tilling claw, and is turned to the working position after the mounting base 4 is inserted. Guide / contact members 6 and 7 that sometimes come into contact are provided integrally. On one side in the thickness direction of the holder 3, a holding spring (spring plate) 8 having a width almost equal to the fitting insertion hole 3 a and having a slightly shorter length is prevented from coming off and supported by a spring pin 9.

After the mounting base is inserted into the insertion hole 3a of the holder 3 at the insertion / removal position 4 in the above-described state, when the mounting base is turned to the working position 4a, the pin insertion hole 5 of the holder 3 and the mounting base 4 are inserted. Of the mounting base 4 is fixed by pressing the side surface of the mounting base 4, the pin 10 is inserted to prevent the mounting base 4 from coming off, and the pin 11 is locked by the clip 11. I try to keep out. When the mounting base is inserted into the insertion hole 3a of the holder 3 at the insertion / removal position 4 as described above, the pressing spring 8 does not press the side surface of the mounting base 4.

Next, the operation of the tilling claw mounting device 1 of the embodiment configured as described above will be described. First, when the tilling nail is mounted on the holder 3, as shown in FIGS. 1 and 3, the tilling nail mounting base 4 is inserted into the fitting insertion hole 3a of the holder 3.
At the insertion / removal position. At this time, since the pressing spring 8 does not press the side surface of the mounting base 4, the mounting base 4 can be easily fitted and inserted by hand. After inserting the mounting base 4, hitting the tilling nail outside the holder 3 with a hammer etc.
a, the mounting base 4 comes into contact with the guide / contact members 6 and 7, the pin insertion hole 5 of the holder 3 and the pin insertion hole 5 of the mounting base 4 coincide, and the holding spring 8 is attached to the mounting base. 4 is pressed and fixed. In this state, the pin 10 is inserted into both the pin insertion holes 5 to prevent the mounting base 4 from coming off, and is locked by the clip 11 to prevent the pin 10 from coming off. Then, the tilling shaft 2 is rotated in the direction of the arrow to perform the tilling operation.

During the tilling operation and when the tilling operation is stopped, the side surface of the mounting base 4 of the tilling claw is pressed and fixed by the pressing spring 8, and the tilling claw continues the tilling operation without generating backlash. Can be. Also, when the tilling shaft 2 is reversed to level the unevenness formed at the tilling work start position, the tilling claw has its mounting base 4 at 4b in FIG.
The mounting base 4 continues to be pressed and fixed on the side surface by the holding spring 8. Therefore, the tilling claw does not become free, and the tilling shaft 2
When the tilling operation is resumed by rotating the tilling forward, the amount of rotation of the tilling claw is very small, and the holding spring 8 does not wear. When removing the tilling nail, remove the clip 11 and
, And the tillage nail is hit with a hammer or the like to rotate to the insertion / removal position 4 and then extracted by hand.

[0012]

According to the tilling claw mounting device of the present invention as described above, the following effects can be obtained.
The insertion holes for inserting the mounting base of the tilling claw of the holder are guided on both sides in the width direction while slidingly contacting when inserting the mounting base of the cultivating claw, and are turned to the working position after inserting the mounting base. Guide and contact members that sometimes come in contact are provided integrally,
When the mounting base is rotated to the working position, the pin insertion hole of the holder and the pin insertion hole of the mounting base match, and the holding spring presses the side surface of the mounting base to insert the pin to prevent the mounting base from coming off. Therefore, even when the tilling axis is reversed, not only during the tilling work, the mounting base of the tilling claw comes into contact with the guide / contact member and is fixed by the presser spring, and the tilling claw is in a free state. Then, when the tilling shaft is rotated forward to perform the tilling operation, abnormal abrasion does not occur on the contact surface between the holding spring and the mounting base.

Since the holding spring does not press the side surface of the mounting base at the position where the mounting base of the tilling claw is inserted and removed, and presses the mounting hole of the holder when the mounting base rotates to the working position, The insertion and removal of the tilling claw into and out of the insertion hole of the holder can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a tilling nail mounting device according to the present invention.

FIG. 2 is an end view of a holder.

FIG. 3 is a cross-sectional view illustrating the operation of the tilling claw attachment device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tiller installation device 2 Tiller shaft 3 Holder 3a Insertion hole of tiller installation base 4 Tiller installation base (insertion / removal position) 4a Working position of cultivator installation base 4b Tiller installation base when tilling axis is reversed Movement position 5 Pin insertion hole of holder and tilling claw mounting base 6,7 Guide / contact member of cultivating claw mounting base 8 Holding spring (spring plate) 9 Spring pin 10 Pin 11 Clip

Claims (2)

(57) [Claims] 1. A mounting base (4) of a tilling claw is inserted into a holder (3) fixedly mounted on a cultivating shaft (2) , and a pin insertion hole ( ) is formed in the holder (3) and the mounting base (4). 5)
The pin (10) is inserted to prevent the mounting base (4) from coming off, and the side of the mounting base (4) is pressed by the holding spring (8) in the holder (3 ) to rotate the mounting base (4) . in tilling claws mounting device (1) which is adapted to restrict, the holder (3) of the tilling claws of the mounting base (4) fitted to interpolate fitting the insertion hole (3a) is on both sides in the width direction, the attachment group of tilling claws
When inserting and inserting part (4), it guides while sliding,
Abuts when turning to working position after inserting part (4)
Integrally with the guide-contacting member (6, 7) provided that a pin insertion hole of the holder when the mounting base (4) has rotated to the working position (5) and the pin insertion hole of said mounting base (5) And the presser spring (8) presses against the side surface of the mounting base (4) to insert the pin (10) so as to prevent the mounting base (4) from coming off. apparatus. 2. A holding spring (8) is provided at a position where the fitting insertion hole (3a) of the holder is inserted into and removed from the mounting base (4) of the tilling claw.
There does not press the mounting base (4) side, the mounting base (4)
2. The tilling claw mounting device according to claim 1, wherein the tilling claw is configured to be pressed when it is turned to a working position .